You can use this FI_ITEMS_MASS_CHANGE Function module to change items in FI Doc, This function module is the same as the fb02 transaction code.

Sample code below use FI_ITEMS_MASS_CHANGE to change item text ( BSEG-SGTXT ).

Incoming search terms:

FI_ITEMS_MASS_CHANGE,aenkz sap FI_ITEMS_MASS_CHANGE zlspr IT_FLDTAB,fb02 mass,SAP MASS CHANGE contact data for ext,sap mass changes fb02 xblnr,sap mass fi document